iv [BlockSize]byte
}

func (b *aesCipherAsm) NewCBCEncrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.c = b.function
	copy(c.iv[:], iv)
	return &c
}

func (b *aesCipherAsm) NewCBCDecrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.c = b.function + 128 // decrypt function code is encrypt + 128
	copy(c.iv[:], iv)
	return &c
}

func (x *cbc) BlockSize() int { return BlockSize }

	iv  [BlockSize]byte
}

func (b *aesCipherAsm) NewCBCEncrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.enc = cbcEncrypt
	copy(c.iv[:], iv)
	return &c
}

func (b *aesCipherAsm) NewCBCDecrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.enc = cbcDecrypt
	copy(c.iv[:], iv)
	return &c
}

func (x *cbc) BlockSize() int { return BlockSize }

type aesCipher struct {
	key []byte
	enc C.GO_AES_KEY
	dec C.GO_AES_KEY
}

type extraModes interface {
	// Copied out of crypto/aes/modes.go.
	NewCBCEncrypter(iv []byte) cipher.BlockMode
	NewCBCDecrypter(iv []byte) cipher.BlockMode
	NewCTR(iv []byte) cipher.Stream
	NewGCM(nonceSize, tagSize int) (cipher.AEAD, error)
}

var _ extraModes = (*aesCipher)(nil)

func NewAESCipher(key []byte) (cipher.Block, error) {

	block, _ := des.NewTripleDESCipher(key)
	if isRead {
		return cipher.NewCBCDecrypter(block, iv)
	}
	return cipher.NewCBCEncrypter(block, iv)
}

func cipherAES(key, iv []byte, isRead bool) any {
	block, _ := aes.NewCipher(key)
	if isRead {
		return cipher.NewCBCDecrypter(block, iv)
	}
	return cipher.NewCBCEncrypter(block, iv)
}

		{"(StreamReader).Read", Method, 0},
		{"(StreamWriter).Close", Method, 0},
		{"(StreamWriter).Write", Method, 0},
		{"AEAD", Type, 2},
		{"Block", Type, 0},
		{"BlockMode", Type, 0},
		{"NewCBCDecrypter", Func, 0},
		{"NewCBCEncrypter", Func, 0},
		{"NewCFBDecrypter", Func, 0},
		{"NewCFBEncrypter", Func, 0},
		{"NewCTR", Func, 0},
		{"NewGCM", Func, 2},
		{"NewGCMWithNonceSize", Func, 5},